Bio 4.4 Deforestation & Peat Destruction 3.5 / 5 based on 2 ratings ? BiologyHuman impact on the environmentGCSEAQA Created by: DanCreated on: 31-03-13 23:45 State 2 reasons why we cut down forests Land and Timbre 1 of 9 How has deforestation increased the amount of CO2 released into the atmosphere? More burning of trees or timbre and microorganisms decaying trees 2 of 9 How has deforestation decreased the rate at which CO2 is removed from the atmosphere? Trees use CO2 when they photosynthesise. Less trees means less CO2 is turned into oxygen 3 of 9 How has deforestation reduced biodiversity? Loss of trees means loss of habitats 4 of 9 Give me two reasons what the land could be used for after deforestation? Rice fields, Cattle fields, Crop fields for ethanol production 5 of 9 What is given off in Cattle and Rice fields? Methane 6 of 9 What is Peat? Peat is half decayed organic compounds such as trees. 7 of 9 Why is peat dangerous to our earth? It has CO2 locked up in it. 8 of 9 How does the locked up CO2 escape? People use peat as compost for their gardens, when microorganisms decompose the peat, high levels of CO2 are given off 9 of 9
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